When someone borrows an item, including a vehicle or ATV, they assume responsibility for it and are expected to take reasonable care of it. If damages occur while the individual is using the borrowed item, it is their responsibility to repair or replace it, unless other arrangements have been explicitly agreed upon and documented.
If your friend does not have the means to pay for the damages, it becomes a civil matter between both parties involved. You might choose to file a claim with your own insurance to seek coverage to repair your vehicle if applicable. Depending on your insurance policy's particulars, some may offer limited protection for damages. Additionally, you could attempt to negotiate a repayment plan with your friend. However, keep in mind that collecting compensation may become challenging without a prior written agreement that outlines responsibilities in case of damages.
Personal relationships can be impacted when incidents regarding financial responsibilities occur. To mitigate such situations, its essential to clarify expectations when lending valuable items and ensure both parties understand any potential risks or financial liabilities involved before they borrow what's yours.